Where may I be able to find online the following:
a. the Shema and its accompanying passages for morning and evening, in Hebrew with vowels
b. the complete Amidah/Shimonei Esrei for the weekday in Hebrew with vowels
I forgot my siddur at home in the US. Doubt I’d be able to find one here in Karachi, Pakistan. 
WRS - Shalom aleikhem!
Do you need it to be Hebrew script or is transliterated to English OK? If transliterated doesn’t bother you, there are more options.
Well, I know of one siddur online that has the Amidah in transliteration, which is okay. I’d prefer Hebrew with vowels, but if that cannot be found then I guess transliteration will do.
I have brakha ha-derekh, birkhat ha-mazon, and stuff in a sefer tehillim I carry around (risky, I know), but no amidah.
Darn. I actually had a pen that had the Shma and Amidah on a pull-out thing. It was so cool. Honestly, Jews are some of the brightest people I know.
WRS - osei shalom bimromav hu yaasei shalom aleinu v’al kol israeil! v’imru amein!